GWR 3200 Class

GWR 3200 class
Preserved GWR 9017 Earl of Berkeley at Horsted Keynes railway station
Power type	Steam
Designer	Charles Collett (rebuild)
Rebuilder	GWR Swindon Works
Rebuild date	1936–1939
Number rebuilt	30
Configuration	4-4-0
UIC classification	2'B h
Gauge	4 ft 8 1⁄2 in (1,435 mm)
Leading wheel diameter	3 ft 8 in (1.118 m)
Driver diameter	5 ft 8 in (1.727 m)
Minimum curve	6 chains (400 ft; 120 m) normal, 5 chains (330 ft; 100 m) slow
Length	56 ft 2 1⁄4 in (17.13 m)
Width	8 ft 9 1⁄2 in (2.68 m)
Height	12 ft 10 in (3.91 m)
Axle load	15 tons 8 cwt (34,500 lb or 15.6 t) full
Weight on drivers	30 tons 8 cwt (68,100 lb or 30.9 t) full
Locomotive weight	49 tons 0 cwt (109,800 lb or 49.8 t) full
Tender weight	40 tons 0 cwt (89,600 lb or 40.6 t) full
Fuel type	Coal
Water capacity	3,500 imp gal (16,000 l; 4,200 US gal)
Boiler pressure	180 lbf/in² (1.24 MPa)
Firegrate area	17.0 sq ft (1.58 m2)
Heating surface: Tubes	1,001.0 sq ft (93.00 m2)
Heating surface: Firebox	108.0 sq ft (10.03 m2)
Superheater area	81.2 sq ft (7.54 m2)
Cylinders	Two, inside
Cylinder size	18 in × 26 in (460 mm × 660 mm)
Valve gear	Stephenson
Valve type	Slide valves
Tractive effort	18,955 lbf (84.32 kN)
Career	GWR » BR
Power class	GWR: B, BR: 2P
Number	3265, 3200–3228; renumbered 9065, 9000–9028
Nicknames	Dukedog
Axle load class	Yellow
Withdrawn	1948–1960
Preserved	9017
Disposition	One preserved, remainder scrapped

The Great Western Railway 3200 Class (or 'Earl' Class) was a design of 4-4-0 steam locomotive for passenger train work. The nickname for this class was Dukedog since the locomotives were composed of former Duke Class boilers on Bulldog Class frames. As such they were one of the last steam locomotive classes to retain outside frames.

The GWR absorbed the Cambrian Railways in 1923. The Cambrian main line was lightly built, and only a few classes of GWR locomotive were allowed to run over it. The Duke Class were the most powerful of these locomotives, and their allocation to the Cambrian section extended the life of the class by a number of years.

In January 1930 the cylinders and motion from Duke no. 3265 Tre Pol and Pen were fitted, with a spare Duke boiler, to the frames of Bulldog no. 3365 Charles Grey Mott. By the early 1930s the Duke Class frames, which were of the earlier curved-top type, were becoming uneconomical to repair by patching. This rebuild combined the smaller boiler of the Dukes with the more robust straight-topped frames of the Bulldogs, producing a locomotive whose weight distribution was within the limits set by the Cambrian.

The first, prototype, conversion retained its Duke number and name (3265 Tre Pol and Pen), but the others took new numbers in the 32xx series (3200-3228). The conversions were to have carried the original Duke Class names, but a decision was taken to name the class after living Earls who had some connection with the GWR. The first batch of twenty were allocated names, but, following the construction and naming of no. 3212 Earl of Eldon in May 1937, the nameplates were removed and the names given to nos. 5043-5062 of the Castles. All these locomotives were renumbered 90xx in 1946 upon delivery of new 2251 Class engines.

These locomotives were in regular use on the Cambrian Line in the 1950s. They were one of the few classes light enough to be permitted on the wooden Barmouth Bridge; others were the GWR 2251 Class and the LMS Ivatt Class 2 2-6-0.

Preservation

Preserved GWR 9017 in early British Railways livery at Llangollen in April 2009

Departing from Sheffield Park station on the Bluebell Line 18 October 2009

One locomotive, No. 9017 Earl of Berkeley, survives in preservation at the Bluebell Railway. It is currently on static display at Sheffield Park shed, awaiting overhaul after being withdrawn with boiler failures in June 2011 just 2 years before the expiry of her boiler ticket in 2013

Numbering

NB: In the table below, names in parentheses were allocated but never actually carried in GWR/BR service.

Numbers	Rebuilt from	Name
3265 / 9065	3265 & 3365	Tre Pol and Pen
3200 / 9000	3288 & 3422	Earl of Mount Edgcumbe
3201 / 9001	3263 & 3412	Earl of Dunraven
3202 / 9002	3286 & 3416	Earl of Dudley
3203 / 9003	3275 & 3424	Earl Cawdor
3204 / 9004	3271 & 3439	Earl of Dartmouth
3205 / 9005	3255 & 3413	Earl of Devon
3206 / 9006	3267 & 3428	Earl of Plymouth
3207 / 9007	3274 & 3410	Earl of St. Germans
3208 / 9008	3285 & 3403	Earl Bathurst
3209 / 9009	3277 & 3392	Earl of Radnor
3210 / 9010	3269 & 3402	Earl Cairns
3211 / 9011	3281 & 3415	Earl of Ducie
3212 / 9012	3261 & 3405	Earl of Eldon
3213 / 9013	3257 & 3374	(Earl of Powis)
3214 / 9014	3252 & 3434	(Earl Waldegrave)
3215 / 9015	3262 & 3420	(Earl of Clancarty)
3216 / 9016	3282 & 3404	(Earl St Aldwyn)
3217 / 9017	3258 & 3425	(Earl of Berkeley)
3218 / 9018	3266 & 3380	(Earl of Birkenhead)
3219 / 9019	3260 & 3427	(Earl of Shaftesbury)
3220 / 9020	3279 & 3414
3221 / 9021	3259 & 3411
3222 / 9022	3278 & 3436
3223 / 9023	3253 & 3423
3224 / 9024	3290 & 3409
3225 / 9025	3268 & 3437
3226 / 9026	3270 & 3390
3227 / 9027	3280 & 3433
3228 / 9028	3256 & 3429

Bibliography

• Nock, O.S. (1977). Standard Gauge Great Western 4-4-0s Part 1 Inside Cylinder Classes 1894-1910. Newton Abbot: David & Charles. ISBN 0-7153-7411-7. 
• Nock, O.S. (1978). Standard Gauge Great Western 4-4-0s Part 2 Counties to the Close 1904-1961. Newton Abbot: David & Charles. ISBN 0-7153-7684-5. 

• Ian Allan ABC of British Railways Locomotives, winter 1957/8 edition, part 1, page 19
• Whitehurst, Brian (1973). Great Western engines, names, numbers, types, classes: 1940 to preservation. Oxford: Oxford Publishing Company. pp. 72, 102, 141. ISBN 0-902888-21-8. OCLC 815661. 

External links

• http://www.greatwestern.org.uk/m_in_440_dukedog.htm
• Earl of Berkeley Bluebell Railway loco page